While we truly have no explanation for the sartorial selections of this teen heartthrob, we do have this secret theory that the more down-in-the-dumps the Biebs gets over his struggling relationship with Selena, the baggier—and crotchier—his pants become.

Just to prove it to you, we've chronicled his baffling bottoms to date, starting way back at the beginning of 2012—when the Biebs was just your typical 17-year-old lad with "normal" teen saggy-pants problems.

Now, call it the new strand of Bieber Fever or whatever you will, but these ill-fitting styles are so horrid, so repugnant, they might just make you vom. Proceed with caution—you've been warned.